/**
 * @author : cww
 * @date : 2021/1/25 21:38
 */
public abstract class Mediator {
    private Colleague houseOwner;
    public Mediator(){
        this.houseOwner = new HouseOwner();
    }
    public abstract void addColleague(Colleague colleague);
    public abstract void send(Colleague colleague,String message);
}
